Não informado. (1952). Proceedings of the Institution of Civil Engineers. Institution of Civil Engineers.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Proceedings of the Institution of Civil Engineers. London: Institution of Civil Engineers, 1952.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Proceedings of the Institution of Civil Engineers. Institution of Civil Engineers, 1952.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.